Metal window-frame.



No. 742,999, PATENTED NOV. 3, 1903. W. J. KLEMM.

METAL WINDOW FRAME.

APPLIQATION FILED 00122, 1902.

N0 MODEL.

, y I I I tion, and are described in detail in the speci- WILLIAM J. KLIIMM, or CHICAGO,

Patented November 3, 1903.

PATENT QFFICFZ.

ILLINOIS, ASSIGNOR TO JOHN A.

KNISELY, OF CHICAGO, ILLINOIS.

METAL WINDOW-FRAME.

SPECIFICATION forming part of Letters Patent No. 742,999, dated November 3, 1903.

Application filed OctoberZ, 1902.

To all whom it may concern:

Be it known that 1, WILLIAM J. KLEMM, a citizen of the United States, residing at Chicago, in the county of Cook and State of Illinois, have invented certain new and useful Improvements in Metal VVindow-Frames, of

fication following.

In the drawings, Figure 1 shows in elevation the lower. portion of a window-frame with sections broken away to show the application of the closurein normal position and when being removed. Fig. 2 is a perspective view of the lower portion of a sheet-metal frame of common form with the closure applied thereto. Fig. 3 is a cross-section of the window-frame at a point just above the closure. Fig. 4 is a detail view showing in side elevation the closure, and Fig. 5 is a vertical section taken through the inner face of the window-frame and showing in elevation the weight.

Referring to the details of the drawings, A represents a sheet-metal window-frame of common form, provided with sash-Weight boxes 01. and slideways or grooves a for the. sash, the latter not being shown, as they form no part of my invention and may be of any desired construction. Near the sill and near the head of the frame I cut openings 1) inthe inner or sash side of the frame, through which access may be had to the weight-boxes The edges of themetal at the sides and bottom of the openings are bent inwardly, as at b and b but the edge at the top of the opening is left in the same plane with the rest of the face of the frame, as shown, or, if desired, may be given a slight outward bond.

The closure for the opening consists of a Serial No. 125,646. (No model.)

strip of sheet metal of the same thickness as that of which the frame is composed cut slightly larger than the opening and has its upper end bent inwardly, as at c. The sides of the strip are.ben t at right angles to the body of the strip, forming flanges 0 each of which is bent upon itself to form a groove 0 of sufficient size to receive the bent edges of the frame at the sides of the openings, as shown clearly in Fig. 3. The lip c at the lower end I of the strip is left in its normal plane and is adapted to fit the depression formed by the inward bend b of the edge of the frameadjacent to the bottom of the opening.

The closure 0, formed as above described, is fitted to the opening in the frame by inserting the end 0 under the upper edge of the opening I), then pushing the closure toward the frame, whereupon the edges 1) will enter the grooves c and the lower lip 0 will be seated in the depression formed by the inward bend 12 thus bringing the outer faces of the closure 6 flush with the adjacent portions of the frame both in the sash slideways and in the face of the frame. It will be understood that the grooves 0 are so proportioned that the edges of the frame will fit tightly therein, thus giving sufficient frictional engagement to retain the closure in place under all normal conditions. If it be desired to remove the closure, the end of a screwdriver or similar tool inserted along the edge of the flanges c in the slideways will be sufficient to force the closure outwardly until it may be grasped by the hand.

Though I have shown the closures only at the bottom of the frame, it will be apparent that the same device may be applied near the head of the frame.

It will be seen that, constructed and arranged as shown, the exposed surface of the closure and that upon which the sash slides as it is moved up and down, is in the same general plane with the adjacent surface of the frame, thus olfering no obstruction to the free movement of the sash.

In considering the utility of my invention it should be borne in mind that the closure does not mar or disfigure the appearance of the frame, does not require any catches vor locks to secure it inplace, is quickly and easily applied and removed, and is so simple that it is cheaply manufactured.

Having thus described my invention, what I claim as new, and desire to secure by Letters Patent, is I 1. In a window-frame having openings therein to afford access to the weight-boxes, the edges adjacent to the openings being recessed substantiallyas shown, closures for said openings having portions fitting said recesses and adapted to frictionally embrace the edges of the frame adjacent to the openings.

2. In a Window-frame having weight-box openings therein, and with the edges at the sides and bottom of said openings bent inwardly, removable closures for said openings having portions overlapping said inwardlybent portions at the bottom and sides of the weight-box openings, said closure also having a portion underlying the edge of the frame at the top of said opening.

-3. In a window-frame having weight-box openings therein, removable closures for said openings, consisting of metal plates having grooves formed in their side edges adapted to receive the edges of the frame adjacent to the edges of the frame at the sides of said openings, substantially as set forth.

5. A closure for weight-box openings in a window-frame, consisting of a strip of metal having an inwardly-bent lip at one end, and having its side edges bent inwardly at right angles to form flanges and having said flanges bent upon themselves to form grooves to receive the edges of the frame adjacent to said openings.

In testimony whereof I affix my signature .in presence of two witnesses.

WILLIAM J. KLEMM. Witnesses:

F. BENJAMIN, R. G. ROBERTS. 

